Bracket for universal stands or supports.



PATEN' BD "APR. 19, 1904. 7 A. L. ROBBINS. I j BRACKET FOR UNIVERSAL STANDS 0R SUPPORTS.

AYPLIOATION FILED OCT. 10, 1903.

'30 MODEL.

' T al q it maylc ncern- ..j 5, v

'Be it known'that I, ALFRED Ii-EROBBINS,. citizen of the United States, residingatxOakz" park, in the county'of Cook and :Stateofllli-F nois, haveinvented certain newand usefulYIms, provements in Brackets for UniversaLStands.

' BFiAokEfT FQQLQQNNE 'I f sPnc FIcATIoN'fmnagpargfieiress Patent 1v 757,493 v .i'eb swam-126 515 a p i rr w i tiled Isia or Supports, otwhich theiollo wing is a specification; 1; J Mil;

The object of this inventionis thexproduction of an improvedadj ust'a'blabracket adapted to support articles of various sorts. Whilel have herein illustrated this device as being employed to support science apparatus, it is obvious that it is not limited to such application and that it may be used in many other connections.

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of an apparatus-stand comprising two brackets embodying the features of this invention, said brackets being shown as supporting a combined color and siren disk and a motor for rotating tional view of the color-disk shank and theshaft for rotating the color-disk.

The universal stand illustrated in the drawings comprises a base 1, having three adjustbular body portion 7 bifurcated in its rear side and provided with two ears 8 and 9, through which ears the coinciding openings 10 and 11, respectively, extend. The opening 10 is internally screw-threaded to adapt it to receive the correspondingly-screw-threaded stem of the wing-screw 12, the opening 11 be- Patentecl April 19, 1904.

te'd nptil 19; 190

' stattar etin -n15.me awatts 'ear 9 gto'; 1d raw said ears: together.-

1 The for- 5.5-

. wardlytextending'iportion 14..- ofneach: .of: the

brackets 6 'isofxsocketiform, .hav-ing the axial opening. 15, and is Iprovideduponits side with: a..-hoss:. 16,.- havingcan intennallyl-screwvthread ed opening 17 to receive the wing-screwvl8ai &

The opening 17 communicates with the axial opening 15 of the socket portion 14 of the bracket by means of the opening 19, which opening and the inner end of said screwthreaded opening 17 is adapted to receive a plug 20, preferably made of some soft metal, so that the pressure of the wing-screw 18 will not marthe shank of any piece of apparatus inserted into the opening 15. The opening within the tubular body portion 7 of each bracket 6 is counterbored, as at 21, and this counterbore is provided with a thickness of felt, paper, or other material suitable to ofier a soft contact with the column 4; Both of the brackets 6 are adapted to be vertically ad justable upon the column 4 and to be secured to said column by a tightening of the clamping wing-screw 12.

22 refers to an electric motor having a shaft 23, with a grooved pulley 24 fixed upon said shaft. The motor 22 is provided with a shank 25, adapted to'enter the opening 15 in the tubular portion 14 of. the upper one of the two brackets 6 and. by means ofa belt 26 to furnish power to operate any piece of apparatus suspended within the lower one of said bracketsfor example, a combined color and siren disk, which will be next described.

27 represents such combined color and siren disk, the inner portion 28 of the face of this disk being made up of the primary colorsplaced upon the disk in such relation that white is produced by a rapid rotation of said disk. Near the periphery of the disk 27 two concentric series of holes 29 and, 30 for the siren demonstration are provided, the former being regularly spaced, the latter irregularly, in order to produce a musical note or discord, accordingly as the one or the other series is employed. The disk 27 is mounted upon a 100 shaft 31, rotatably supported in suitable bearings in the outer ends of the fork 32. Between the arms of thisfork the shaft 31 carries a grooved pulley 33, fixed upon said shaft. The forward end of the shaft 31 is provided with an opening 34 and a set-screw 35 for receiving and securing the shank 36, upon which the disk 27 is supported. A collar 37 is fixed upon said shaft, and the forward end of the shank is screw-threaded 'to' receive a thumbnut 38. The rear end of the fork 32 is in the.

form of a stem 25, which stem isadapted to be inserted within the opening 15 of the for ward socket portion 14 of the bracket 6. The belt 26 is adapted to run from the pulley 24 to and over the pulley 33 to transmit rotatory motion from the motor 22 to the shaft 31.

The brackets 6, or one only of them; "may be used for holding diflerent articles of apparatus from that shown herein, it being only necessary that all apparatus intended to be used'in connection therewith be provided with stems or shanks. fitted to lie within the forwardly-extending socket portion 14 of said brackets.

It is clear that many changes may be resorted to in the construction of this apparatus without departing from the spirit and scope of my invention, wherefore I desire to have it understood that I do not limit myself to the embodiment herein shown and described.

I claim as my invention- An adjustably-movable bracket having a bifurcated tubular rear end with two perforated ears and a clamping-screw, also having a tubular forward endwith an integral boss, which boss has a screw-threaded opening and an opening communicating between the screw-threaded opening in the boss and the tubular forward portion of the bracket, said communicating opening being of a diameter less than that of the opening in the boss, a plug adapted to lie within the opening in the boss, said plug having a stem for extending through said intermediate'opening, and a locking-screw for the opening in said boss.

ALFRED L. ROBBINS. Witnesses:

L. L. MILLER, GEORGE L. CHINDAHL. 

